CN112259813A - Battery charging and discharging power determination method, system and device - Google Patents
Battery charging and discharging power determination method, system and device Download PDFInfo
- Publication number
- CN112259813A CN112259813A CN202010065568.7A CN202010065568A CN112259813A CN 112259813 A CN112259813 A CN 112259813A CN 202010065568 A CN202010065568 A CN 202010065568A CN 112259813 A CN112259813 A CN 112259813A
- Authority
- CN
- China
- Prior art keywords
- battery
- charging
- health
- state
- charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of batteries, and provides a battery charge and discharge power determination method in an implementation mode, wherein the determination method comprises the following steps: acquiring the health state of the battery in the charging and discharging process; and determining the charge and discharge power of the battery according to the health state. A corresponding system and device for determining the charge and discharge power of the battery are also provided. The embodiment of the invention is used for calculating the most appropriate power value under the current health state, and the power value is adopted to charge or discharge the battery, so that the safety and the service life of the battery are improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery charging and discharging power determining method, a battery charging and discharging power determining system and a battery charging and discharging power determining device.
Background
The state of health of a battery is an important parameter of a battery pack, and is represented by state of health (SOH), according to a reaction mechanism inside a battery cell, the SOH of the battery pack is inevitably reduced in the working process, and the available capacity of the battery pack is also changed due to factors such as external temperature change. If the SOH of the battery is in a lower state, the battery is charged and discharged according to parameters of BOL (begin of life), which causes overlarge current in the charging and discharging process, the situations of lithium precipitation and overhigh battery core temperature occur, the SOH attenuation is accelerated, the service life of the battery is shortened, and the use cost of the battery is indirectly improved.
Domestic research on real-time detection and guidance of SOH and available capacity on charge and discharge power is few, general charge and discharge processes are charged and discharged according to BMS requirements, BMS charge and discharge requirements of many electric vehicles on the market are carried out according to BOL parameters, the main function of SOH is to remind people of the health state of a battery, although the change of SOH can cause the difference of the charge and discharge capacity of the battery, the SOH is not effectively utilized to adjust the charge and discharge power currently, and the health of a battery core is protected to the maximum extent.
In the current BMS system, the calculation of the SOH is only applied to let the user know the state of health of the battery, the SOH is closely related to the charging and discharging of the battery, and many batteries are charged and discharged with the power meter obtained by initial calibration without considering the influence of the SOH change on the charging and discharging power.
BOL, (Begin of Life), the beginning of the full life cycle of the battery,
EOL, (End Of Life), End state Of the full Life cycle Of the battery.
Disclosure of Invention
In view of the above, the present invention is directed to a method, a system, and a device for determining battery charging/discharging power, so as to at least solve the problem that the charging/discharging power is not suitable for the battery condition due to the fact that the SOH factor is not considered in the current battery charging/discharging control.
In a first aspect of the present invention, there is provided a battery charge-discharge power determination method including:
acquiring the health state of the battery in the charging and discharging process;
and determining the charge and discharge power of the battery according to the health state.
Preferably, the health state is determined by the following parameters:
the temperature of the battery, the charge variation corresponding to the unit SOC variation in the current state of the battery and the initial state of health of the battery;
wherein the initial state of health refers to the state of health of the battery at the beginning of a charge and discharge process.
Preferably, the health state calculating step includes:
calculating the health state by the following formula:
state of health ═ initial state of health · current temperature coefficient · Δ CnInitial temperature coefficient ÷ Δ C1；
Wherein the current temperature coefficient is a temperature coefficient corresponding to the current temperature determination of the battery;
the initial temperature coefficient is a temperature coefficient corresponding to the temperature of the battery at the beginning of the charge and discharge process;
the described Δ CnRepresenting the charge variation corresponding to the unit SOC variation in the current state of the battery;
the described Δ C1Indicating the charge variation corresponding to the unit SOC variation when the charge and discharge process of the battery is started.
Preferably, the step of determining the charge/discharge power of the battery according to the state of health includes:
determining a comparison relationship between the health state and a BOL health state of the battery or an EOL health state of the battery;
obtaining the charge and discharge power of the battery based on the comparison relationship, and a charge and discharge power MAP table of the battery in a BOL health state and a charge and discharge power MAP table of the battery in an EOL health state;
the charging and discharging power MAP table of the battery in the BOL health state comprises charging and discharging powers corresponding to different working conditions of the battery in the charging and discharging process in the BOL health state;
the charging and discharging power MAP table of the battery in the EOL health state comprises charging and discharging powers corresponding to different working conditions of the battery in the charging and discharging process in the EOL health state.
Preferably, the comparison relationship is a comparison relationship between the state of health and a BOL state of the battery, and the step of obtaining the charge and discharge power of the battery includes:
mapBOL-k(SOHBOL-SOHn)＝mapn；
wherein k is a predetermined coefficient, SOHBOLTaking 100% as the defined BOL health status; SOHnThe obtained health state; the map isBOLRepresents: and according to the current charging working condition of the battery, matching the charging and discharging power in a charging and discharging power MAP table under the BOL healthy state.
Preferably, the comparison relationship is a comparison relationship between the health state and an EOL health state of the battery, and the step of obtaining the charge and discharge power of the battery includes:
k(SOHn-SOHEOL)+mapEOL＝mapn；
wherein k is a predetermined coefficient, SOHEOLIs a defined EOL health state; SOHnThe obtained health state; the map isEOLRepresents: and according to the current charging condition of the battery, the matched charging and discharging power is obtained in a charging and discharging power MAP table under the EOL healthy state.
Preferably, the preset coefficient k is obtained by:
preferably, the determination method further includes: and acquiring the health state at a preset frequency, and determining the charging and discharging power of the battery according to the health state until the charging and discharging process is completed.
In the second aspect of the present invention, there is also provided a battery charge-discharge power determination system including:
and the control module is used for acquiring the health state of the battery in the charging and discharging processes and determining or controlling the charging and discharging power of the battery according to the determination method.
In a third aspect of the present invention, there is also provided a battery charge-discharge power determination device including:
at least one processor;
a memory coupled to the at least one processor;
the memory stores instructions executable by the at least one processor, and the at least one processor implements the battery charging and discharging power determining method by executing the instructions stored by the memory.
The fourth aspect of the present invention also provides a computer-readable storage medium having stored therein instructions that, when run on a computer, cause the computer to execute the aforementioned battery charge and discharge power determination method.
Through the technical scheme provided by the invention, the following beneficial effects are achieved:
(1) the invention relates the SOH data and the charge and discharge power, and fully plays the role of the SOH data.
(2) The influence of temperature is added to the calculation of the SOH, and the temperature coefficient is added to ensure that the influence of temperature change on the calculation of the SOH is ensured when the calculation interval is too long, so that the calculation is more accurate.
(3) The charge and discharge power is adjusted in real time by calculating the SOH, so that the phenomenon that the traditional BMS always uses the charge and discharge power in a BOL state to cause the overcharge and the overdischarge of the battery is avoided.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic flow chart of a battery charging and discharging power determination method according to an embodiment of the present invention;
fig. 2 is a block diagram of a battery charge/discharge power determination system according to an embodiment of the present invention;
fig. 3 is a specific flowchart of a method for determining charging/discharging power of a battery according to an embodiment of the present invention during a charging process;
fig. 4 is a specific flowchart of a method for determining battery charging/discharging power according to an embodiment of the present invention during a discharging process.
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a schematic flow chart of a method for determining charging and discharging power of a battery according to an embodiment of the present invention, as shown in fig. 1. The present embodiment provides a battery charge/discharge power determination method including:
acquiring the health state of the battery in the charging and discharging process;
and determining the charge and discharge power of the battery according to the health state.
Therefore, the current SOH (state of health) of the battery is obtained to determine the charging and discharging power of the current battery, so that the situation that the current is too large in the charging and discharging process, the lithium is separated out and the temperature of the battery cell is too high due to the fact that the charging and discharging are carried out according to the battery parameters in the BOL (begin of life) state under the condition that the SOH of the battery is in a low state can be avoided. Therefore, the SOH attenuation of the battery is slowed down, the service life of the battery is prolonged, and the use cost of the battery is indirectly reduced.
Specifically, the general steps of the present embodiment are as follows: the state of health of the battery during charging and discharging processes is obtained, and the state of health of the battery may be obtained by an external system, or may be obtained in an existing manner. And adjusting the charging and discharging power of the battery according to the acquired health state. In the current electric automobile, the vehicle management system needs to monitor the health state of the battery in real time, but the calculated SOH is only fed back to the user for the user to know the state of the battery.
In one embodiment of the present invention, the health status is determined by: acquiring the current temperature of the battery and the charge variation corresponding to the unit SOC variation, and taking the initial health state of the battery as a reference; calculating the state of health of the battery; the initial state of health refers to the state of health of the battery at the beginning of the charging and discharging process. Specifically, the initial SOH of a battery pack is set as the SOH1The initial SOC is SOC1Then the other two state parameters are obtained for use in calculating the state of health. These two state parameters are respectively: the current temperature of the battery, more precisely, the current temperature may be the temperature inside the battery pack, or the average temperature inside the battery pack within a Δ t; and the charge variation corresponding to the unit SOC variation, for example, the charge variation corresponding to the increase or decrease of the battery charge per 1% increase or decrease of the battery SOC, with the unit of "coulomb"; the unit SOC variation here can be customized, such as 3%, 5%, etc. The state parameter reflects the ability of the battery to store charge. Through the selection of the two parameters, the calculation of the health state can be more accurate.
In one embodiment of the present invention, the step of calculating the state of health of the battery includes:
calculating the health state by the following formula;
state of health ═ initial state of health · current temperature coefficient · Δ CnInitial temperature coefficient ÷ Δ C1；
Determining a corresponding temperature coefficient according to the temperature of the battery; the current temperature coefficient is a temperature coefficient corresponding to the current temperature, and the initial temperature coefficient is a temperature coefficient corresponding to the temperature of the battery at the beginning of the charging and discharging process; the described Δ CnRepresenting the charge variation corresponding to the unit SOC variation in the current state of the battery; the described Δ C1Indicating the amount of change in charge per unit amount of change in SOC at the start of the charge/discharge process. Specifically, when the battery starts to discharge, the detection unit starts to detect the battery information and detects that the current SOH value is SOH1Record Δ t1Value of change in SOC over time, Δ t1The change value of SOC in time is delta SOC, and delta t is recorded1Variation of electric quantity over time, Δ t1The variation value of the electric quantity in time is Delta C1，Δt1Temperature in the battery pack is T within time1，T1Temperature coefficient of time is alpha1. The detection section continues recording that the elapsed time is Δ t when the change in SOC reaches Δ SOC2Record Δ t2Change of electric quantity in time is Delta C2，Δt2Temperature in the battery pack is T within time2，T2Temperature coefficient of time is alpha2. The detection section continues recording that the elapsed time is Δ t when the change in SOC reaches Δ SOC3Record Δ t3Change of electric quantity in time is Delta C3，Δt3Temperature in the battery pack is T within time3，T3Temperature coefficient of time is alpha3. Calculating delta t by analogy2、Δt3To Δ tnMean SOH over time2、SOH3And SOHnThe method comprises the following specific steps:
……
according to the above rule, can obtain
From this Δ t can be calculatednTime SOHnAnd it can be known that the SOHnRelated to the initial state of health, temperature coefficient, and charge change value. The calculation process of the discharging process is similar to the charging process, and is not described herein again.
In one embodiment of the present invention, the step of determining the charge/discharge power of the battery according to the state of health includes:
determining a comparison relation between the health state and a BOL (Bill of materials) health state or an EOL (Ethernet over Cable) health state of the battery, and based on the comparison relation and a charging and discharging power MAP table under the BOL health state and a charging and discharging power MAP table under the EOL health state; obtaining the charge and discharge power of the battery; the charge and discharge power MAP table in the BOL healthy state comprises: in a BOL health state, the battery has charging and discharging powers corresponding to different working conditions in the charging and discharging process; the charging and discharging power MAP table in the EOL healthy state comprises: and under the EOL health state, the charging and discharging power of the battery is corresponding to different working conditions in the charging and discharging process. When the battery is in the BOL state, the health state of the battery is equal to the BOL health state, and the charging and discharging power can be directly obtained through the MAP table matching, but the actual situation is not. Most of the health states are between the BOL health state and the EOL health state, and the positions of the charging and discharging power in the BOL health state and the charging and discharging power in the EOL health state can be correspondingly determined by determining the positions of the health states in the interval formed by the BOL health state and the EOL health state, so that the charging and discharging power in the health states can be adjusted and determined. In a practical scenario, the charging and discharging power MAP table is specifically divided into a charging power MAP table and a discharging power MAP table, which are selected according to whether the current process is a charging process or a discharging process.
In one embodiment of the present invention, if the correspondence relationship is a correspondence relationship between the state of health and a BOL state of health of the battery, the step of obtaining the charge/discharge power of the battery includes:
mapBOL-k(SOHBOL-SOHn)＝mapn；
wherein k is a predetermined coefficient, SOHBOLTaking 100% as the defined BOL health status; SOHnThe obtained health state; the map isBOLRepresents: and according to the current charging working condition of the battery, matching the charging and discharging power in a charging and discharging power MAP table under the BOL healthy state.
In the embodiment, the comparison relationship between the health state and the BOL health state is calculated, and the map is compared according to the comparison relationshipBOLPerforming corresponding adjustment to obtain SOHnCorresponding mapnWherein, mapBOLThe BOL is obtained by matching in a charging and discharging power MAP table under a BOL healthy state.
In one embodiment of the present invention, if the correspondence relationship is a correspondence relationship between the health state and an EOL health state of the battery, the step of obtaining the charge/discharge power of the battery includes:
k(SOHn-SOHEOL)+mapEOL＝mapn；
wherein k is a predetermined coefficient, SOHEOLIs a defined EOL health state; SOHnThe obtained health state; the map isEOLRepresents: according to the current charging condition of the battery, the charging and discharging power matched in the charging and discharging power MAP table under the EOL health state。
The same idea as the previous embodiment, but with different parameters. In the embodiment, the comparison relationship between the health state and the EOL health state is calculated, and the map is compared according to the comparison relationshipEOLPerforming corresponding adjustment to obtain SOHnCorresponding mapnWherein, mapEOLThe power distribution method is obtained by matching in a charging and discharging power MAP table under an EOL health state.
In an embodiment provided by the present invention, the preset coefficient k is obtained by:
In an embodiment provided by the present invention, the determining method further includes: and acquiring the health state at a preset frequency, and determining the charging and discharging power of the battery according to the health state until the charging and discharging process is terminated or completed. Here, the preset frequency is, for example, once every 10 seconds, that is, the health state is acquired every 10 seconds, and the charge and discharge power is adjusted. Therefore, real-time adjustment in the charging and discharging process of the battery is realized, and the charging and discharging power is more accurately controlled.
Fig. 2 is a block diagram of a battery charge/discharge power determination system according to an embodiment of the present invention, and as shown in fig. 2, in an embodiment of the present invention, there is also provided a battery charge/discharge power determination system, including:
and the control module is used for acquiring the health state of the battery in the charging and discharging processes and determining or controlling the charging and discharging power of the battery according to the battery charging and discharging power determination method. The battery management system BMS in this embodiment is configured to perform the function of determining or adjusting the charging and discharging power, and the state of health of the battery obtained by the BMS may be calculated by the BMS itself, and the charging and discharging power of the battery is determined or adjusted by the state of health and the determination method described above. Further, the determination system further comprises a detection part for detecting operating condition parameters of the battery, the operating condition parameters being used for estimating the SOC value, the SOH state and the appropriate charging and discharging power, and when the control module is a battery management system BMS, the calculation part and the control part are integrated inside the BMS, i.e. inside the control module.
In an embodiment provided by the present invention, there is also provided a battery charge-discharge power determination device including:
at least one processor;
a memory coupled to the at least one processor;
the memory stores instructions executable by the at least one processor, and the at least one processor implements the battery charging and discharging power determining method by executing the instructions stored by the memory. The memory stores instructions executable by the at least one processor, and the at least one processor implements the battery charging and discharging power determining method by executing the instructions stored by the memory. The control module or processor herein has the functions of numerical calculation and logical operation, and it has at least a central processing unit CPU, a random access memory RAM, a read only memory ROM, various I/O ports and interrupt systems, etc. of data processing capability. Here, the control module or the control device may be, for example, a single chip, a chip, or a processor, which is commonly used hardware, and in a more commonly used case, the control module or the control device is a processor of an intelligent terminal or a PC. Here, the device may be an existing controller in a PMS (battery pack management system) or a BMS (battery management system), which implements a function that is a sub-function of the controller. The specific form of the device is a piece of software code in a hardware runtime environment that relies on the controller in an existing PMS.
Fig. 3 is a specific flowchart of a method for determining charging/discharging power of a battery according to an embodiment of the present invention during a charging process, and fig. 3 shows a policy implementation flow during the entire charging process, as shown in fig. 3. Inserting charging gun, detecting battery information by the detecting unit after charging is started, and detecting current SOH value as SOH1Record Δ t1Value of change in SOC over time, Δ t1The change value of SOC in time is delta SOC, and delta t is recorded1Variation of electric quantity over time, Δ t1The variation value of the electric quantity in time is Delta C1，Δt1Temperature in the battery pack is T within time1，T1Temperature coefficient of time is alpha1. The detection section continues recording that the elapsed time is Δ t when the SOC change reaches Δ SOC again2Record Δ t2Change of electric quantity in time is Delta C2，Δt2Temperature in the battery pack is T within time2，T2Temperature coefficient of time is alpha2. The detection section continues recording that the elapsed time is Δ t when the change in SOC reaches Δ SOC3Record Δ t3Change of electric quantity in time is Delta C3，Δt3Temperature in the battery pack is T within time3，T3Temperature coefficient of time is alpha3. Calculating delta t by analogy2、Δt3To Δ tnMean SOH over time2、SOH3And SOHnThe method comprises the following specific steps:
……
according to the above rule, can obtain
From this Δ t can be calculatednTime SOHnAnd it can be known that the SOHnRelated to the initial state of health, temperature coefficient, and charge change value.
According to the above formula, the SOH in any time period in the charging process can be obtained, different charging powers are determined according to different SOHs, and the initial SOH is represented as the SOH0The initial calibration power value is map0Arbitrarily different SOHnThe corresponding power calculation method is as follows:
k(SOHn-SOHEOL)+mapEOL＝mapn；
in the formula: mapBOLIs the charging power or discharging power at BOL (begin of life);
mapEOLcharging power or discharging power at eol (end of life);
SOHBOLtaking 100% as the SOH value of the defined BOL;
SOHEOLSOH value for defined EOL;
from the above formula, the SOH of the battery is obtained when the battery is in a state of healthnIs SOHBOLCalculated map of timenI.e. equal to mapBOLConsistent with the actual charging situation.
The charge/discharge power MAP table indicates the charge/discharge current and the power corresponding to the current in different voltage conditions. The BOL charging and discharging power MAP table and the EOL charging and discharging power MAP table respectively indicate charging and discharging currents and power corresponding to the currents when the voltages are different in the BOL state or the EOL state.
Fig. 4 is a specific flowchart of a method for determining battery charging/discharging power according to an embodiment of the present invention during a discharging process. The details of the discharging process are similar to those of the charging process, and are not described herein again.
In an embodiment, the present invention further provides a storage medium, and a fourth aspect of the present invention further provides a computer-readable storage medium, where instructions are stored, and when the instructions are executed on a computer, the instructions cause the computer to execute the foregoing battery charge and discharge power determination method.
By the implementation method provided by the invention, when the battery is charged and discharged, the internal resistance of the battery is changed due to the change of SOH, and the polarization voltage is increased due to an overlarge current value. By calculating and estimating the SOH, the most appropriate power value under the current SOH is calculated, the calculation result is sent to the control system, the charging and discharging power value is adjusted, the battery is protected, and the battery can work better.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A battery charge-discharge power determination method, characterized by comprising:
acquiring the health state of the battery in the charging and discharging process;
and determining the charge and discharge power of the battery according to the health state.
2. The determination method according to claim 1, characterized in that the health status is determined by the following parameters:
the temperature of the battery, the charge variation corresponding to the unit SOC variation in the current state of the battery and the initial state of health of the battery;
wherein the initial state of health refers to the state of health of the battery at the beginning of a charge and discharge process.
3. The method of determining according to claim 2, wherein the step of calculating the health status comprises:
calculating the health state by the following formula:
state of health ═ initial state of health · current temperature coefficient · Δ CnInitial temperature coefficient ÷ Δ C1；
Wherein the current temperature coefficient is a temperature coefficient corresponding to the current temperature determination of the battery;
the initial temperature coefficient is a temperature coefficient corresponding to the temperature of the battery at the beginning of the charge and discharge process;
the described Δ CnRepresenting the charge variation corresponding to the unit SOC variation in the current state of the battery;
the described Δ C1Indicating the charge variation corresponding to the unit SOC variation when the charge and discharge process of the battery is started.
4. The determination method according to claim 1, wherein the step of determining the charge-discharge power of the battery according to the state of health includes:
determining a comparison relationship between the health state and a BOL health state of the battery or an EOL health state of the battery;
obtaining the charge and discharge power of the battery based on the comparison relationship, and a charge and discharge power MAP table of the battery in a BOL health state and a charge and discharge power MAP table of the battery in an EOL health state;
the charging and discharging power MAP table of the battery in the BOL health state comprises charging and discharging powers corresponding to different working conditions of the battery in the charging and discharging process in the BOL health state;
the charging and discharging power MAP table of the battery in the EOL health state comprises charging and discharging powers corresponding to different working conditions of the battery in the charging and discharging process in the EOL health state.
5. The method according to claim 4, wherein the comparison relationship is a comparison relationship between the state of health and a BOL state of health of the battery, and the step of obtaining the charging/discharging power of the battery comprises:
mapBOL-k(SOHBOL-SOHn)＝mapn；
wherein k is a predetermined coefficient, SOHBOLTaking 100% as the defined BOL health status; SOHnThe obtained health state; the map isBOLRepresents: according to the aboveAnd the current charging working condition of the battery is the charging and discharging power matched in the charging and discharging power MAP table in the BOL healthy state.
6. The method according to claim 4, wherein the comparison relationship is a comparison relationship between the health status and an EOL health status of the battery, and the step of obtaining the charging and discharging power of the battery comprises:
k(SOHn-SOHEOL)+mapEOL＝mapn；
wherein k is a predetermined coefficient, SOHEOLIs a defined EOL health state; SOHnThe obtained health state; the map isEOLRepresents: and according to the current charging condition of the battery, the matched charging and discharging power is obtained in a charging and discharging power MAP table under the EOL healthy state.
7. The determination method according to claim 5 or 6, characterized in that the preset coefficient k is obtained by:
8. the determination method according to any one of claims 1 to 6, characterized in that the determination method further comprises: and acquiring the health state at a preset frequency, and determining the charging and discharging power of the battery according to the health state until the charging and discharging process is completed.
9. A battery charge-discharge power determination system, characterized in that the determination system comprises:
a control module for obtaining the state of health of a battery during charging and discharging, and determining or controlling the charging and discharging power of the battery according to the determination method of any one of claims 1 to 8.
10. A battery charge-discharge power determination device characterized by comprising:
at least one processor;
a memory coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, and the at least one processor implements the battery charge and discharge power determining method according to any one of claims 1 to 8 by executing the instructions stored by the memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065568.7A CN112259813B (en) | 2020-01-20 | 2020-01-20 | Battery charging and discharging power determination method, system and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065568.7A CN112259813B (en) | 2020-01-20 | 2020-01-20 | Battery charging and discharging power determination method, system and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112259813A true CN112259813A (en) | 2021-01-22 |
| CN112259813B CN112259813B (en) | 2022-03-29 |
Family
ID=74224770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010065568.7A Active CN112259813B (en) | 2020-01-20 | 2020-01-20 | Battery charging and discharging power determination method, system and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112259813B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659680A (en) * | 2021-08-18 | 2021-11-16 | 东软睿驰汽车技术（沈阳）有限公司 | Method and device for controlling charging and discharging power of battery and electronic equipment |
| CN114167289A (en) * | 2021-12-01 | 2022-03-11 | 中国第一汽车股份有限公司 | Method and device for determining output power of battery and vehicle |
| CN114207909A (en) * | 2021-10-26 | 2022-03-18 | 东莞新能安科技有限公司 | Electrochemical device management method, system, electrochemical device, and electronic equipment |
| WO2023082046A1 (en) * | 2021-11-09 | 2023-05-19 | 宁德时代新能源科技股份有限公司 | Method for determining direct-current discharge resistance, method for determining maximum discharge power, and battery management system |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6668247B2 (en) * | 1997-03-12 | 2003-12-23 | U.S. Nanocorp | Method and system for determining state-of-health of a lead-acid defibrillator battery using an intelligent system |
| US20100121587A1 (en) * | 2006-11-30 | 2010-05-13 | The Boeing Company | Health Management of Rechargeable Batteries |
| CN102473974A (en) * | 2009-09-23 | 2012-05-23 | 宝马股份公司 | Method for controlling or regulating at least one operating parameter that influences the aging state of an electrical energy store |
| US20130066573A1 (en) * | 2011-09-12 | 2013-03-14 | Eaglepicher Technologies, Llc | Systems and methods for determining battery state-of-health |
| US20150066837A1 (en) * | 2013-08-30 | 2015-03-05 | GM Global Technology Operations LLC | Method for predicting charging process duration |
| CN104569827A (en) * | 2013-10-28 | 2015-04-29 | 现代摩比斯株式会社 | Battery management system and operating method thereof |
| CN104931886A (en) * | 2014-03-20 | 2015-09-23 | 现代摩比斯株式会社 | Apparatus and method for estimating deterioration of battery pack |
| CN105048484A (en) * | 2015-09-08 | 2015-11-11 | 山东大学 | Battery state-of-health optimization control method for modular multilevel battery energy storage system |
| CN105811531A (en) * | 2016-05-12 | 2016-07-27 | 芯创力源（北京）科技发展有限公司 | Novel power battery heath management system |
| CN106959420A (en) * | 2017-03-10 | 2017-07-18 | 南京航空航天大学 | A kind of power battery pack SOC and SOH adaptive estimation method |
| CN107765188A (en) * | 2017-11-28 | 2018-03-06 | 惠州市蓝微新源技术有限公司 | Cell health state acquisition methods |
| US20180149709A1 (en) * | 2016-11-29 | 2018-05-31 | Lg Chem, Ltd. | Battery aging state calculation method and system |
| CN108281720A (en) * | 2018-01-10 | 2018-07-13 | 北京金山安全软件有限公司 | Method, device and equipment for monitoring health state of battery of electronic equipment |
| CN109061483A (en) * | 2018-06-28 | 2018-12-21 | 珠海格力电器股份有限公司 | Battery state of health detection method and device, storage medium and processor |
| EP3424771A1 (en) * | 2017-07-03 | 2019-01-09 | Ningbo Geely Automobile Research & Development Co. Ltd. | Method and electronic device for managing a power limit |
| US10209314B2 (en) * | 2016-11-21 | 2019-02-19 | Battelle Energy Alliance, Llc | Systems and methods for estimation and prediction of battery health and performance |
| CN109725266A (en) * | 2018-12-29 | 2019-05-07 | 蜂巢能源科技有限公司 | A method and device for calculating the state of health of a battery SOH |
| CN110118944A (en) * | 2019-06-05 | 2019-08-13 | 杭州华塑加达网络科技有限公司 | The estimating system and method for cell health state |
| CN209344266U (en) * | 2019-04-02 | 2019-09-03 | 西安交通大学 | A lithium battery management system |
| CN110224461A (en) * | 2019-06-14 | 2019-09-10 | 桑顿新能源科技(长沙)有限公司 | Battery power limit method, apparatus, computer equipment and storage medium |
| CN110261790A (en) * | 2019-04-10 | 2019-09-20 | 北京海博思创科技有限公司 | Predictor method, the apparatus and system of cell health state |
| CN110568375A (en) * | 2019-09-03 | 2019-12-13 | 昆山宝创新能源科技有限公司 | SOH (state of health) determination method and device for power battery |
-
2020
- 2020-01-20 CN CN202010065568.7A patent/CN112259813B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6668247B2 (en) * | 1997-03-12 | 2003-12-23 | U.S. Nanocorp | Method and system for determining state-of-health of a lead-acid defibrillator battery using an intelligent system |
| US20100121587A1 (en) * | 2006-11-30 | 2010-05-13 | The Boeing Company | Health Management of Rechargeable Batteries |
| CN102473974A (en) * | 2009-09-23 | 2012-05-23 | 宝马股份公司 | Method for controlling or regulating at least one operating parameter that influences the aging state of an electrical energy store |
| US20130066573A1 (en) * | 2011-09-12 | 2013-03-14 | Eaglepicher Technologies, Llc | Systems and methods for determining battery state-of-health |
| US20150066837A1 (en) * | 2013-08-30 | 2015-03-05 | GM Global Technology Operations LLC | Method for predicting charging process duration |
| CN104569827A (en) * | 2013-10-28 | 2015-04-29 | 现代摩比斯株式会社 | Battery management system and operating method thereof |
| CN104931886A (en) * | 2014-03-20 | 2015-09-23 | 现代摩比斯株式会社 | Apparatus and method for estimating deterioration of battery pack |
| CN105048484A (en) * | 2015-09-08 | 2015-11-11 | 山东大学 | Battery state-of-health optimization control method for modular multilevel battery energy storage system |
| CN105811531A (en) * | 2016-05-12 | 2016-07-27 | 芯创力源（北京）科技发展有限公司 | Novel power battery heath management system |
| US10209314B2 (en) * | 2016-11-21 | 2019-02-19 | Battelle Energy Alliance, Llc | Systems and methods for estimation and prediction of battery health and performance |
| US20180149709A1 (en) * | 2016-11-29 | 2018-05-31 | Lg Chem, Ltd. | Battery aging state calculation method and system |
| CN106959420A (en) * | 2017-03-10 | 2017-07-18 | 南京航空航天大学 | A kind of power battery pack SOC and SOH adaptive estimation method |
| EP3424771A1 (en) * | 2017-07-03 | 2019-01-09 | Ningbo Geely Automobile Research & Development Co. Ltd. | Method and electronic device for managing a power limit |
| CN107765188A (en) * | 2017-11-28 | 2018-03-06 | 惠州市蓝微新源技术有限公司 | Cell health state acquisition methods |
| CN108281720A (en) * | 2018-01-10 | 2018-07-13 | 北京金山安全软件有限公司 | Method, device and equipment for monitoring health state of battery of electronic equipment |
| CN109061483A (en) * | 2018-06-28 | 2018-12-21 | 珠海格力电器股份有限公司 | Battery state of health detection method and device, storage medium and processor |
| CN109725266A (en) * | 2018-12-29 | 2019-05-07 | 蜂巢能源科技有限公司 | A method and device for calculating the state of health of a battery SOH |
| CN209344266U (en) * | 2019-04-02 | 2019-09-03 | 西安交通大学 | A lithium battery management system |
| CN110261790A (en) * | 2019-04-10 | 2019-09-20 | 北京海博思创科技有限公司 | Predictor method, the apparatus and system of cell health state |
| CN110118944A (en) * | 2019-06-05 | 2019-08-13 | 杭州华塑加达网络科技有限公司 | The estimating system and method for cell health state |
| CN110224461A (en) * | 2019-06-14 | 2019-09-10 | 桑顿新能源科技(长沙)有限公司 | Battery power limit method, apparatus, computer equipment and storage medium |
| CN110568375A (en) * | 2019-09-03 | 2019-12-13 | 昆山宝创新能源科技有限公司 | SOH (state of health) determination method and device for power battery |
Non-Patent Citations (1)
| Title |
|---|
| 顾启蒙 等: "锂离子电池功率状态估计方法综述", 《电源技术》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659680A (en) * | 2021-08-18 | 2021-11-16 | 东软睿驰汽车技术（沈阳）有限公司 | Method and device for controlling charging and discharging power of battery and electronic equipment |
| CN114207909A (en) * | 2021-10-26 | 2022-03-18 | 东莞新能安科技有限公司 | Electrochemical device management method, system, electrochemical device, and electronic equipment |
| WO2023070323A1 (en) * | 2021-10-26 | 2023-05-04 | 东莞新能安科技有限公司 | Electrochemical apparatus management method, system, electrochemical apparatus and electronic device |
| CN114207909B (en) * | 2021-10-26 | 2024-02-27 | 东莞新能安科技有限公司 | Electrochemical device management method, electrochemical device management system, electrochemical device and electronic equipment |
| WO2023082046A1 (en) * | 2021-11-09 | 2023-05-19 | 宁德时代新能源科技股份有限公司 | Method for determining direct-current discharge resistance, method for determining maximum discharge power, and battery management system |
| CN114167289A (en) * | 2021-12-01 | 2022-03-11 | 中国第一汽车股份有限公司 | Method and device for determining output power of battery and vehicle |
| CN114167289B (en) * | 2021-12-01 | 2024-01-16 | 中国第一汽车股份有限公司 | Battery output power determining method and device and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112259813B (en) | 2022-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112259813B (en) | Battery charging and discharging power determination method, system and equipment | |
| CN108333526B (en) | Battery capacity detection method and device | |
| JP7194887B2 (en) | BATTERY SOC DETERMINATION METHOD, APPARATUS, MANAGEMENT SYSTEM AND STORAGE MEDIUM | |
| US9759779B2 (en) | State of charge estimation device and method of estimating state of charge | |
| US11982719B2 (en) | Apparatus and method for determining degradation state of battery, battery pack and electric vehicle | |
| CN110323519A (en) | Battery pack method for heating and controlling and system | |
| EP4027158B1 (en) | Soc estimation method for battery system, battery system and computer device | |
| US20240178687A1 (en) | Apparatus and method for controlling operation of secondary battery using relative deterioration degree of electrode | |
| JP2016186487A (en) | Secondary battery state-of-charge measurement apparatus and secondary battery state-of-charge measurement method | |
| KR20190075684A (en) | An battery monitoring apparatus detecting charge balance of a battery and a method thereof | |
| CN112736320B (en) | Method, device and equipment for determining cooling parameters of cooling system | |
| JP2020514757A (en) | Battery resistance estimating apparatus and method | |
| TWI687701B (en) | Method for determining state of charge and electronic device thereof | |
| CN112216886A (en) | Method and device for estimating battery charging time | |
| US20210119464A1 (en) | Method and apparatus controlling charging of battery based on diffusion characteristics of material included in the battery | |
| JP6970289B2 (en) | Charge control devices, transportation equipment, and programs | |
| CN108693473B (en) | Method and device for detecting SOH (state of health) of battery | |
| WO2022217399A1 (en) | State-of-charge cutoff method and apparatus, and control system and storage medium | |
| CN112180276A (en) | SOH estimation method and device for battery, battery state display method and charging control method for battery pack | |
| CN112224088A (en) | Charging control method, system and equipment | |
| CN110190349B (en) | Multi-stage temperature control discharging method, device and system for battery | |
| CN110391473B (en) | Method for charging an electrical energy storage unit | |
| KR101467363B1 (en) | Mehtod and apparatus for estimating state of charge of battery | |
| CN114361648B (en) | Battery pack temperature control method, system, equipment and storage medium | |
| CN116653611A (en) | Method and device for determining residual battery capacity, electronic equipment and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.8899 Xincheng Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: SVOLT Energy Technology Co.,Ltd. Country or region after: China Address before: 213000 168 Huacheng Road, Jintan District, Changzhou, Jiangsu Patentee before: SVOLT Energy Technology Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |